ous that a difference of jTsiis^ of an naces. Now that the scaffolding is entirely removed, cated by means of a mechanical multiplier. inch is an appreciable and important quantity. the stone shows to good advantage; and as it is a ' In the case of the workshop measuring machine, the It will be at… … THE PRESERVATION OF THE OBELISK. circle with a reversed side of the standard gauge and the twelve feet, and has an in- bearing bored out to fit a of an inch. The screw has 20 threads to an inch, and difference gauge, which has to be as much larger as ex- cline of about 3S]4 degrees. The road is…
